44: Where are all the "lost Einsteins?"

Who are the "lost Einsteins?" That's the question Raj Chetty is trying to answer. He's a professor of economics who works on the Equality of Opportunity Project at Stanford University. The project uses big data sets, like anonymous tax and U.S. Patent records, to figure out who is and who is not innovating in the United States today.

You can hear more of Kai's conversation with Raj Chetty on Marketplace.org.